𝔖 Bobbio Scriptorium
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On the approximate investigation of a point transformation of a plane into a plane

✍ Scribed by V. I. Goryunov


Book ID
112462337
Publisher
Springer US
Year
1969
Tongue
English
Weight
354 KB
Volume
12
Category
Article
ISSN
0033-8443

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Let % be a class of subsets of a finite set X. Elements of $!I are called blocks. Let u, t, A and k be nonnegative integers such thar u B k 3 t 3 0. A pair (X, '%?l) is called a (u, k, A) t-design, denoted by S,(t, k, u), if (1) 1x1 = u, (2) every t-subset of X is contained in exactly A blocks and (